Dear Sir Madam, Item::4 Loops Addressable Fire Alarm Host System with Computer 648*N After sale service::Yes Design::OEM ODM Occasion:Big project Package::Standard safety export package carton (Box + Foam) or as customized Shipping way::By air by sea Certificate::CE SGS ISO9001 Payment::T T,L C,,Money Gram. Wiring Method::Two-m Installation::Wall- mouned